Method digits

regex/regex-syntax/src/ast/mod.rs:704–710

The number of digits that must be used with this literal form when used without brackets. When used with brackets, there is no restriction on the number of digits.

(&self)

    /// used without brackets. When used with brackets, there is no
    /// restriction on the number of digits.
    pub fn digits(&self) -> u32 {
        match *self {
            HexLiteralKind::X => 2,
            HexLiteralKind::UnicodeShort => 4,
            HexLiteralKind::UnicodeLong => 8,
        }
    }
}

/// A single character class expression.